static int init_local(CLI *c) {
SOCKADDR_UNION addr;
socklen_t addrlen;
addrlen=sizeof(SOCKADDR_UNION);
if(getpeername(c->local_rfd.fd, &addr.sa, &addrlen)<0) {
strcpy(c->accepting_address, "NOT A SOCKET");
c->local_rfd.is_socket=0;
c->local_wfd.is_socket=0; /* TODO: It's not always true */
#ifdef USE_WIN32
if(get_last_socket_error()!=ENOTSOCK) {
#else
if(c->opt->option.transparent || get_last_socket_error()!=ENOTSOCK) {
#endif
sockerror("getpeerbyname");
return -1;
}
/* Ignore ENOTSOCK error so 'local' doesn't have to be a socket */
} else { /* success */
/* copy addr to c->peer_addr */
memcpy(&c->peer_addr.addr[0], &addr, sizeof(SOCKADDR_UNION));
c->peer_addr.num=1;
s_ntop(c->accepting_address, &c->peer_addr.addr[0]);
c->local_rfd.is_socket=1;
c->local_wfd.is_socket=1; /* TODO: It's not always true */
/* It's a socket: lets setup options */
if(set_socket_options(c->local_rfd.fd, 1)<0)
return -1;
if(auth_libwrap(c)<0)
return -1;
if(auth_user(c)<0) {
s_log(LOG_WARNING, "Connection from %s REFUSED by IDENT",
c->accepting_address);
return -1;
}
s_log(LOG_NOTICE, "%s connected from %s",
c->opt->servname, c->accepting_address);
}
return 0; /* OK */
}
static int init_remote(CLI *c) {
int fd;
/* create connection to host/service */
if(c->opt->source_addr.num)
memcpy(&c->bind_addr, &c->opt->source_addr, sizeof(SOCKADDR_LIST));
#ifndef USE_WIN32
else if(c->opt->option.transparent)
memcpy(&c->bind_addr, &c->peer_addr, sizeof(SOCKADDR_LIST));
#endif
else {
c->bind_addr.num=0; /* don't bind connecting socket */
}
/* Setup c->remote_fd, now */
if(c->opt->option.remote) {
fd=connect_remote(c);
} else /* NOT in remote mode */
fd=connect_local(c);
if(fd<0) {
s_log(LOG_ERR, "Failed to initialize remote connection");
return -1;
}
#ifndef USE_WIN32
if(fd>=max_fds) {
s_log(LOG_ERR, "Remote file descriptor out of range (%d>=%d)",
fd, max_fds);
closesocket(fd);
return -1;
}
#endif
s_log(LOG_DEBUG, "Remote FD=%d initialized", fd);
c->remote_fd.fd=fd;
c->remote_fd.is_socket=1; /* Always! */
if(set_socket_options(fd, 2)<0)
return -1;
return 0; /* OK */
}
static int init_local(CLI *c) {
int addrlen;
addrlen=sizeof(c->addr);
if(getpeername(c->local_rfd.fd, (struct sockaddr *)&c->addr, &addrlen)<0) {
strcpy(c->accepting_address, "NOT A SOCKET");
c->local_rfd.is_socket=0;
c->local_wfd.is_socket=0; /* TODO: It's not always true */
#ifdef USE_WIN32
if(get_last_socket_error()!=ENOTSOCK) {
#else
if(c->opt->option.transparent || get_last_socket_error()!=ENOTSOCK) {
#endif
sockerror("getpeerbyname");
return -1;
}
/* Ignore ENOTSOCK error so 'local' doesn't have to be a socket */
} else {
safe_ntoa(c->accepting_address, c->addr.sin_addr);
c->local_rfd.is_socket=1;
c->local_wfd.is_socket=1; /* TODO: It's not always true */
/* It's a socket: lets setup options */
if(set_socket_options(c->local_rfd.fd, 1)<0)
return -1;
if(auth_libwrap(c)<0)
return -1;
if(auth_user(c)<0) {
log(LOG_WARNING, "Connection from %s:%d REFUSED by IDENT",
c->accepting_address, ntohs(c->addr.sin_port));
return -1;
}
log(LOG_NOTICE, "%s connected from %s:%d", c->opt->servname,
c->accepting_address, ntohs(c->addr.sin_port));
}
return 0; /* OK */
}
static int init_remote(CLI *c) {
int fd;
/* create connection to host/service */
if(c->opt->local_ip)
c->bind_ip=*c->opt->local_ip;
#ifndef USE_WIN32
else if(c->opt->option.transparent)
c->bind_ip=c->addr.sin_addr.s_addr;
#endif
else
c->bind_ip=0;
/* Setup c->remote_fd, now */
if(c->opt->option.remote) {
c->resolved_addresses=NULL;
fd=connect_remote(c);
if(c->resolved_addresses) /* allocated */
free(c->resolved_addresses);
} else /* NOT in remote mode */
fd=connect_local(c);
if(fd<0) {
log(LOG_ERR, "Failed to initialize remote connection");
return -1;
}
#ifndef USE_WIN32
if(fd>=max_fds) {
log(LOG_ERR, "Remote file descriptor out of range (%d>=%d)",
fd, max_fds);
closesocket(fd);
return -1;
}
#endif
log(LOG_DEBUG, "Remote FD=%d initialized", fd);
c->remote_fd.fd=fd;
c->remote_fd.is_socket=1; /* Always! */
if(set_socket_options(fd, 2)<0)
return -1;
return 0; /* OK */
}
